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7868384 = 251311877
BaseRepresentation
bin11110000000111111100000
3112210202101122
4132000333200
54003242014
6440351412
7123610616
oct36007740
915722348
107868384
1144946a7
122775568
131826564
14108b6b6
15a5658e
hex780fe0

7868384 has 24 divisors (see below), whose sum is σ = 15617448. Its totient is φ = 3902080.

The previous prime is 7868381. The next prime is 7868423. The reversal of 7868384 is 4838687.

It is a happy number.

It is a super-2 number, since 2×78683842 = 123822933542912, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7868381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3254 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (650727).

Almost surely, 27868384 is an apocalyptic number.

It is an amenable number.

7868384 is a deficient number, since it is larger than the sum of its proper divisors (7749064).

7868384 is a wasteful number, since it uses less digits than its factorization.

7868384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 2010 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 7868384 is about 2805.0639921399. The cubic root of 7868384 is about 198.8971295627.

The spelling of 7868384 in words is "seven million, eight hundred sixty-eight thousand, three hundred eighty-four".

Divisors: 1 2 4 8 16 32 131 262 524 1048 1877 2096 3754 4192 7508 15016 30032 60064 245887 491774 983548 1967096 3934192 7868384